The essential WXtoImg steps are shown below.
Kepler Data Update
From the File menu select Update Keplers - this loads the latest data from the sites configures in WXtoImg, this is usually celestrak.com.
From the Options menu select Recording Options. Here you must select the same virtual audio cable configured in the SDR Console, in this example Line 1 (Virtual Audio Cable). The name depends on the VAC program you have installed. You must select the same device in the Receive DSP pane of the console.
From the File menu select Record, select Record and auto process then press Auto Record.
Do this every time you start WxToImg.